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01 · Ask
Diagnose before you call
Tell the AI what's leaking, dripping or rumbling. It tells you whether you need a plumber, a gas engineer, or a drain specialist — and how urgent it is.
Fit your waste pipework.
Basin, bath, shower or sink waste pipes plumbed to proper gradient — Building Regs Part H compliant.
✓ Updated May 2026✓ Free quotes✓ Vetted pros
20,000+UK homeowners
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Hire a plumber. Without the leak.
You've read the costs and the questions to ask. Now lean on us to find a Gas Safe-verified plumber — and keep the bill honest.
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02 · Read the brief
Walk in informed
Gas Safe vs WaterSafe, boiler warranty conditions, unvented cylinder rules. The plumber brief covers the regs most homeowners learn the hard way.
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03 · Compare
Compare 3 plumber quotes
Up to Three local plumbers come back with itemised quotes — parts, labour and call-out fees — so you can compare like-for-like.
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Top tips
Hiring a plumber, without the regret.
Four moves that separate a smooth job from a nightmare.
Always ask for the Gas Safe ID.
If gas work is part of the job, the engineer must show their Gas Safe registration card. Verify the number at gassaferegister.co.uk before they touch anything.
Get three written quotes.
Plumbing prices vary wildly by job and area. Three quotes shows you the market — anything more than 20% out from the others is a flag.
Insist on parts receipts.
For boiler parts, valves and cylinders, ask for manufacturer receipts. Genuine parts come with warranty; refurbished kit often doesn't.
Hold final payment until tested.
Pay in stages, not upfront. Hold the last 10–20% until you've run hot taps, flushed the system and seen the certificate.
Costs & timeline
Know what it costs. Know when it ends.
Indicative UK ranges and what affects price.
Cost range
By job type
Inc. VAT · 2026
Source: NMT quotes
Source: NMT quotes
Hourly call-out rateHigher in London
£40–£90/hr
Tap or mixer replacement
£80–£250
Radiator installationInc. valves + balancing
£200–£600
New combi boiler installed
£1.8k–£4.5k
Full bathroom plumbingExcl. tiles + suite
£1.5k–£6k
Emergency leak call-outOut-of-hours
£120–£350
!
Quote spread is typically ± 18% — always get 3 quotes.
At a glance
Infographic · VideoThe Plumber briefing.
Infographic
Plumber quick-view
Video guide
Plumber explained
Waste pipework is critical to bathroom and kitchen function — wrong gradient and you'll get smells, blockages and slow drains. Standard UK rule: 18-40mm per metre of fall on horizontal runs.
What's involved
- Plan run, including air admittance valve location (Building Regs Part H)
- Fit waste trap on appliance / fixture
- Run pipework with correct gradient
- Connect to soil stack, hopper or external waste
- Test with full bowl of water
Typical UK costs (2026)
| Item | Cost |
|---|---|
| Single basin / sink waste run | £140–£280 |
| Bath / shower waste run | £180–£350 |
| New bathroom waste rough-in | £600–£1,200 |
| Air admittance valve fit | £75–£140 |
What to check
Always check existing pipe diameter (32mm basin, 40mm bath/shower, 50mm sink, 110mm soil) — mismatched joins are a common DIY failure that ends up costing more to fix.
This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.
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